smart



i all 'men by theseprsents:

o lis required; and a tached to the fiisket-frame.

impression, it will be noticed, is taken through the QJV W atwt .ditaa -IHIRA'M r ,..sMART, o F WoRoEsTER, MAssACHUsET'rst v Ltmratmtivo. 84,225, amd Nwanbe/r 17,1868. I

Pnocnss ronpmn'r'me m coLoRs.

The Bhadula re'ex'r to in'these Letters Patent and making part'ot' the same.

Thai, Hmm nsnmniof the city am county of Worcester, and (Jommo'nwealth of Massachusetts, have invented certain new and useful Impiovements 'In Printing in .Colors from single plates or eugravings;

and vI do hereby deolare that the following is afull,

'clear, and exact description 'of the same, reference being had to'the accompanying diawings, forming av part of this specificatiomjin which Figure 1 repre`sents a side view of a steam-pump and its base or foundatiomfprinted in' different colors,

o from a single cut, according* to myinvention.

Figure Z- represents a cross-section of the paper and hacking or overlaying, showing the mode in which the green .colors are applied on a part only of the print;

and p 'Big-are 3 'represents a side view of the pump and base shown in color.

'Tov 'enable Vthose sllledv in theatt to which my'inv'ention belongs, to make and use the same, I will pro- 'ceed to describe it. more'in detail.

- Printing in' colors, as practised -prior to my invention,

is attended with great'expense, especially when cuts,

plates, or engravings are used to print from, since a sepalate plate or engraving is required for each separate'color.

By my mode of printing in .colors only a single plate an illustration of my mode of printing in'colors let it be supposed that the parts A and B, shown in fig: 3, are to be printed in green colors,

' 'and the brick base O in a reddish color, as shown in fig, 1. In the first place, a -Sheet of paper, to receive the full impression of the plate or cut, is placed .upon

the tympan and properly secured, upon which an impression of the' entire plate is taken in one color, as shown in fig..3. A sheet of thickv paper, card-board, or similar material, is now placed upon the sheet upon which the first impression was taken, and a second impression' is taken, after which the sheet upon which the4 second impressionis taken is removed from the tympan, and the part of the impression representiug the'brick base is cut out and secured by paste or otherwise to the-face of the corresponding part of -the first impression. A Asheet is now fastened to the frisketframe,- and an inipression taken upon that in one color, the same as inthe first instance 'The fi'isket-fi'ame is now raised, and the part representing the brick base is cut out of the print on the sheet securcd to the frisket, after which a sheet to receive the full and fmished impression is placed upon the guides, the frisketframe lowered, and the desiredreddish color being applied to the plate, au 'impression is taken upon the shee't below the frisket, representing that part of the .cut marked O, and which was cut out of the sheet at- The sheet having' the fig. 1, ,when printed in a single dark opening 'cut in the friskct, or the sheet attached to the fi'isket-'ame, the sheetof paper below the fi'isket being supported'or forced through the said opening by the overlaying placed on the'first impression taken on the sheet s'ecured on the tympan. The sheet having thepartially-printed reprcsentation is now removed from the guides), and the cut shcet is removed from the frisket-fralne, together with the overlay which was placed upon the part O of the first impression. the second impression which was taken, and secured to the .corresponding parts of the impression upon the first sheet, and which remains upon the tympan. Another sheet is now attachcd to the fi'isket-frame, and an impression taken from the entire cut or engraving, after which the parts represented by A and -B are cut out of the sheet attached to the frisketframe. The partially-pn'uted sheet is .now placed upon the guides again, and the desired color being applied to` the plate of engraving, a secondimpression-is taken,

representing the parts A and Bin green colors, after which'a similar operation to those above describecl is repeated, and the parts represented in dark colprs, fig; 1, are printed, when` the impression is completed as shown in lig. 1. p

To indicate the' mode of operation more fully, the section, iig. 2, is given, which serves to illustrate the relative position of the erent sheets when the impression is given to print the parts A and B in green colors, as above described, the line of section through .the first sheet, upon which the entire impression was first made, being indicated by the line A B, fig. 1.

In fig. pthe dark lin'e a indicates -the sheet upon the tympan, upon which the first impression is made, and -the overlaying parts A B are shown in red colors,

while the sheet b, to receive the impression, is shown in blue colors, and the perforated or cut-out friskf'tsheet is shown in yellowcolor.

As the overlaying parts correspond'with the oponings or parts cut out of the frisket-sheet, it will be seen that any single impression, when working to form the many-colored print, will constitute only so much of the entire impressicn as has been overlaid on the sh eet 9 on the tympan, with a corresponding opening in the frlsket or sheet attached to the fiisket-frame.

As the overlaid parts are raised considerably above the she'ct supported by the. tympamthe engravivg or plate presses against that part of the sheet b which rests upon the overlaying-material only, the other parts of the -sheet b being protected from ink or the blurring-ac tion of the plate or engraving while the impression is bein given by the fi'isket-.sheet,' or sheet attached to the.

iiisket-ii'ame. w

It will bc seen from the foreg'oing description that an impression can betaken from an eugraving or plate,

in as many different colors as desired, by simply extending'the mode above desciibed of overlayiug the The parts marked A and B are now. cut from diiferent parts of th e impressi'on or print on the'sheet supported by the tympan, and' cnttin'g out corresponding parts of the frisket-sheet, or shcet attached .to the frisket-fi'ame', substantially as above described.

My invention may be used in printing in colors from v a; single plate or engraving with most of the various kinds' of'presscs. It may also be applied with good results in the various' branclres of tinting.

I prefer to take an impression upon `thiok paper,

card-board or other similar material, to be cut up for overlaying theI imp1'ession, as before explained, since, by so doing, the operation can be pelforlned Inore conveniently and with greater aceuraey, esl'reciallyjf the engraving'is soinewhat.-complicated,than it can by i measurement or.otherwise.'

Those skilled in Vthefait to 'which my i'nventi on F belongs cannot fail to perceixfe itsgreat uti-lity and .value, and thevaried extent of its .applicahility to the various branches of printingjn colors.

1 Haing described my improved mode of w printing in' color o What I clain] therein ;as new, vand v(lesire to secure-'d by Letters Patent, is-F- The mode of printing in` colors from a single plate or" engraving, substantially as and for-the pluposes described.-

HIRAM F. SMART. v lVitriesses:Iv 'i 2521108. H. DODGE,

DL Mnm- 

